Is CVE-2022-40684 in the CISA KEV catalog?

Yes. CVE-2022-40684 is on the CISA Known Exploited Vulnerabilities list, added 2022-10-11, and has known ransomware campaign use.

What is the CVSS severity of CVE-2022-40684?

CVE-2022-40684 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2022-40684?

CVE-2022-40684 has an EPSS score of 99.98% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2022-40684

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

Description

An authentication bypass using an alternate path or channel [CWE-288] in Fortinet FortiOS version 7.2.0 through 7.2.1 and 7.0.0 through 7.0.6, FortiProxy version 7.2.0 and version 7.0.0 through 7.0.6 and FortiSwitchManager version 7.2.0 and 7.0.0 allows an unauthenticated atttacker to perform operations on the administrative interface via specially crafted HTTP or HTTPS requests.

CWE-287Improper Authentication

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

99.98%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Fortinet Multiple Products Authentication Bypass Vulnerability

Fortinet FortiOS, FortiProxy, and FortiSwitchManager contain an authentication bypass vulnerability that could allow an unauthenticated attacker to perform operations on the administrative interface via specially crafted HTTP or HTTPS requests.

Apply updates per vendor instructions.

Remediation due: 2022-11-01

Associated with ransomware campaigns

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-14.